/Engine/Plugins/FX/Niagara/Source/NiagaraEditor/Public/NiagaraNode.h
Return the matching "pass-through" pin for the given pin (if supported by this node)
virtual [UEdGraphPin](API\Runtime\Engine\EdGraph\UEdGraphPin) * GetPassThroughPin ( const [UEdGraphPin](API\Runtime\Engine\EdGraph\UEdGraphPin) * FromPin ) const